OSPF Routes not Joining Main Route Table

RouterOS Forwarding Protocols
1

Hello! I have a MikroTik 960PGS router that is connecting to an OpenVPN network to exchange OSPF routes. The issue I’m having is that while MikroTik learns about other route in the network (looking at the 172 route below), it won’t add them to the main routing table an therefore can’t connect to them. If I make a static route to imitate an OSPF route, I can route. Thank in advance for your time.

[admin@10.20.1] > routing ospf instance export
# may/15/2020 11:38:15 by RouterOS 6.44.5
# software id = 0ZYB-YM1I
#
# model = 960PGS
# serial number = AD8B0BA9D791
/routing ospf instance
set [ find default=yes ] in-filter="" out-filter="" redistribute-connected=\
    as-type-2

break

[admin@10.20.1] > ip route print
Flags: X - disabled, A - active, D - dynamic, 
C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme, 
B - blackhole, U - unreachable, P - prohibit 
 #      DST-ADDRESS        PREF-SRC        GATEWAY            DISTANCE
 0 ADS  0.0.0.0/0                          192.168.88.1              1
 1 ADC  10.20.0.0/24       10.20.0.2       10.20.2                   0
 2 ADC  10.20.2.0/24       10.20.2.1       bridge                    0
 3 ADC  192.168.88.0/24    192.168.88.234  ether1                    0

break

[admin@10.20.1] /routing ospf route> print
 # DST-ADDRESS        STATE          COST          GATEWAY         INTERFACE     
 0 10.20.0.0/24       intra-area     10            0.0.0.0         10.20.2       
 1 10.20.2.0/24       intra-area     10            0.0.0.0         bridge        
 2 172.31.16.0/20     intra-area     10010        
 3 192.168.88.0/24    imported-ext-2 20
2

i had major problems with ospf in that version. had to go back to 6.40.9 or up to 6.46.4 to make things work right. Also check that your MTU is consistent all the way thru.

3

Trying out 6.46.6 without any change. Any other ideas?

4

any solution?

5

What device is sending LSA for the 172.31.16.0/20 route? Is it another RouterOS device or some other vendor?

6

I think we are facing the same issue. Sometimes it works, sometimes doesn’t. I just reproduced the issue by disabling and re-enabling the OSPF instance. When the routes are not imported they are in inactive state with infinity cost under the OSPF routes. LSAs are always ok. Some other info: it connects through L2TP IPSEC to the peer and about 2600 LSA received. Tested with 6.48.3 & 6.48.4

I made some tests with Quagga/BIRD with similar configuration and I did not experience the same problem.

7

Check Network Type between routers, because depending on the type of network they exchange LSA but do not set up a route table.

8

What network type do you think?

9

I have the same problem. Setup OSPF instant on v7.1rc6 through l2tp ipsec client and I can see neighbor and LSA, but no routes were added to the main routing table. Btw neighbor router is v6,49 stable.

10

Same issue with CCR1036 and 6.49. Routes are in OSPF/LSA, but not in IP/Routes. This neighbor is also connected via OSPF to Cisco 7206 and there everything is OK.

I’ve tried to turn off/on OSPF instance and even reboot CCR, a problem still persists.

11

I just updated one of our remote offices from 6.48 to 7.4 and I had some adjustments to do. No surprise there, I already had to do them on some of our other routers after upgrading but I went straight to wireguard in those offices. I did see at one of our other offices that our ospf over l2tp config doesn’t work in broadcast mode anymore and has to be set to ptp. I did the same today here and while the LSAs looked all good, they were not being added to the main table no matter what I did. So after a forum search I landed here, and leoservices was spot on. On this side I set it to ptp but at the central office it was still set to broadcast for this connection. After setting both to ptp, it worked as usual. So thanks!